Feature: The F450 series six outside rotors brushless motor， has the high performance.- Low noise. high torque， the operating temperature maintains throughout at 50 below，- It is suitable thet ype: SJM400，Z00MPRO3D，ALIGN TREX.450X/XL，SONICPRO，SmallDragonfly， Black Hawk .3D PRO and so on 450 seriesor 400 series electrical helicopters . - KV(rpm/v):4000- Running-Lignt Current(A):1.5- Ni-Mh Ni-Cd Battery(cell):5-14- Lipo Battery (cell):2-5- Max Permissible Current (A):40- Running Current (A):<25- Weight(g):64- Shaft Diameter(mm):3 - 4000Rpm/v Brushless Outtrunner Motor : 1 Set- Golden Gold Bullet Connector plug (female)*3pac- Gear wheel *1pcs Weight: 150g